Physics Multiple Choice Questions on “Measurement of Time”.
1. Which of the following are NOT units of time?
a) Second
b) Light year
c) Tropical year
d) Minute
Answer: b
Clarification: Light year is a unit of measurement of distance. Tropical year is the amount of time sun takes to return to the same position in the season cycle.
2. Which of the following unit is related to sound frequency?
a) Hertz
b) Decibel
c) Second
d) Meter
Answer: a
Clarification: Decibel is the unit of sound intensity. Hertz is the unit for measuring sound frequency. Hertz is the inverse of second.
3. How many milliseconds make one second?
a) 10
b) 60
c) 45
d) 80
Answer: a
Clarification: Ten milliseconds make one second. 60 seconds make one minute. And 600 minutes make one hour.
4. How many decades are there in 1 century?
a) 10
b) 20
c) 4
d) 5
Answer: a
Clarification: One decade is made up of hundred years. One century is made up of 100 years. Hence, one century contains 10 decades.
5. How many years are there in one millennium?
a) 1000
b) 100
c) 10
d) 70
Answer: a
Clarification: On millennium is equivalent to 1000 years. One millennium contains 100 centuries. It is used to represent huge time periods.
6. Which of the following gives the most accurate result for time measurement?
a) Wall clock
b) Digital watch
c) Quartz clock
d) Atomic clock